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3 years ago

Which value of x satisfies both -9x + 4y = 8 and -3x − y = 4 given the same value of y?

1 answer:

7 0

Multiply 2nd equaton by 4 and add to first

-9x+4y=8
<u>-12x-4y=16 +</u>
-21x+0y=24

-21x=24
divide both sides by -21
x=-24/21
x=-8/7

C is answer

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Which equation represents a line that passes through (5, 1) and has a slope of 1/2?

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Answer:

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

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y - 1 = $\frac{1}{2}$ (x - 5)

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3 years ago

in ABC the measure of angle A is 2x+3 the measure of angle B is 4x+2 the measure of angle C is 2x-1 what are the measures of the

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IN A triangle, sum of all angles = 180 degrees

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8x = 176

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C = 2(22) -1 44-1 = 43 DEGREES

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3 years ago

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olya-2409 [2.1K]

Distance formula : sqrt (x2 - x1)^2 + (y2 - y1)^2
(212,23)...x1 = 212 and y1 = 23
(6,23)......x2 = 6 and y2 = 23
now we sub
d = sqrt ((6 - 212)^2 + (23 - 23)^2)
d = sqrt ((- 206)^2 + (0^2))
d = sqrt (42436 + 0)
d = sqrt 42436
d = 206 miles <==

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3 years ago

By determining f prime left parenthesis x right parenthesis equals ModifyingBelow lim With h right arrow 0 StartFraction f left

aniked [119]

Answer:

70 is answer

Step-by-step explanation:

Given that a function in x is

$f(x) = 5x^2$

we have to find f'(7)

we know by derivative rule derivative of a function is

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For finding out at 7 we replace x by 7

$f'(7) = lim_({h-->0}) \frac{f(7+h)-f(7)}{h}$

= $lim\frac{5(7+h)^2-5*7^2}{h} \\= lim \frac{10h*7+h^2}{h} \\= 70+h = 70$

So f'(7) = 70

answer is 70

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Answer:

School questions are kinda randomly generated but for the most part the answer is mostly B or C

Step-by-step explanation:

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